Huawei U8650 Maintenance Manual
Prepared by
Product Department
Documentation Team
Date
2011-06-9
Reviewed by
Date
Approved by
Date
U8650-NFC Maintenance Manual Basic Version
V1.0
Huawei Technologies Co., Ltd.
All rights reserved
U8650-NFC Maintenance Manual Basic Version V1.0
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Date
Revision
Version
Revision Cause
Section
Number
Change
Description
Author
2011-6-9
V1.0
Product Department
Documentation Team
Revision record
U8650-NFC Maintenance Manual Basic Version V1.0
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Contents
1 PRODUCT INTRODUCTION ................................................................................................................................ 5
1.1 PRODUCT APPEARANCE ..................................................................................................................................... 5
1.2 PRODUCT SPECIFICATIONS ................................................................................................................................ 5
2 MAINTENANCE INFORMATION GUIDE ......................................................................................................... 7
2.1 DOCUMENT APPLICATION ................................................................................................................................... 7
2.2 MAINTENANCE PRECAUTIONS ........................................................................................................................... 7
2.3 OBTAINING MAINTENANCE INFORMATION ....................................................................................................... 7
3 EXPLOSIVE VIEW OF PRODUCT ..................................................................................................................... 8
4 LOCATION OF COMPONENTS ON THE MAIN BOARD ......................................................................... 10
5 SOFTWARE UPGRADE ....................................................................................................................................... 15
5.1 PREPARATION FOR UPGRADE ......................................................................................................................... 15
5.2 UPGRADE PROCESS .......................................................................................................................................... 15
5.3 FORCE DOWNLOAD ........................................................................................................................................... 17
5.4 CHECK THE FIRMWARE VERSION ................................................................................................................... 18
5.5 ERROR HANDLING ............................................................................................................................................. 18
6 MAINTENANCE TOOLS ...................................................................................................................................... 19
7 DISASSEMBLY PROCEDURE .......................................................................................................................... 21
8 ASSEMBLY PROCEDURE .................................................................................................................................. 25
9 TROUBLE SHOOTINGS OF COMMON FAULTS ....................................................................................... 29
9.1 PRINCIPLE INSTRUCTION .................................................................................................................................. 29
9.2 NO POWER ON ................................................................................................................................................... 30
9.2.1 High Current (DC power supply) ..................................................................................................................... 30
9.2.2 Low Current (DC power supply) ...................................................................................................................... 32
9.3 CHARGE FAILURE ............................................................................................................................................... 34
9.4 SIM CARD FAILURE ........................................................................................................................................... 35
9.5 SD CARD FAILURE ............................................................................................................................................. 36
9.6 VIBRATION FAILURE ........................................................................................................................................... 37
9.7 DISPLAY FAILURE ................................................................ ................................................................ ............... 38
9.8 TOUCH PANEL FAILURE ..................................................................................................................................... 39
9.9 CAMERA FAILURE ............................................................................................................................................... 40
9.10 AUDIO MALFUNCTION ..................................................................................................................................... 41
9.10.1 No Ring Tone ................................................................ ................................................................ .......................... 41
9.10.2 Receiver Failure .................................................................................................................................................... 42
9.10.3 Voice Transmitting Failure ................................................................................................ ............................... 43
9.10.4 Earphone No Voice ............................................................................................................................................. 43
9.10.5 Earphone Can‟t Transmit Voice .................................................................................................................... 44
9.11 WIFI&BT FAILURE ........................................................................................................................................... 45
9.12 FM FAILURE ...................................................................................................................................................... 46
9.13 GPS FAILURE ................................................................................................................................................... 47
9.14 NFC FAILURE ................................................................................................................................................... 48
9.15 PROXIMITY FAILURE ........................................................................................................................................ 49
9.16 RF FAILURE ...................................................................................................................................................... 50
9.16.1 RF Receiving Failure-WCDMA 2100MHz ................................................................................................ 50
9.16.2 RF Receiving Failure-WCDMA 900MHz .................................................................................................. 52
9.16.3 RF Receiving Failure-GSM 900&1800&1900MHz .............................................................................. 53
9.16.4 RF Transmitting Failure-WCDMA 2100MHz .......................................................................................... 54
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9.16.5 RF Transmitting Failure-WCDMA 900MHz ............................................................................................. 55
9.16.6 RF Transmitting Failure-GSM 1800&1900MHz .................................................................................... 56
9.16.7 RF Transmitting Failure-GSM 900MHz ..................................................................................................... 57
10 WELD POINTS INDICATOR CHART FOR PCB AND BGA CHIP ...................................................... 58
11 FUNCTIONAL TEST ............................................................................................................................................ 60
11.1 KEYPAD INTRODUCTION ................................................................................................................................. 60
11.2 MMI TEST .......................................................................................................................................................... 60
11.3 VOICE CALL TEST ............................................................................................................................................ 62
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Items
Content Description
Shape
Bar-type
Dimensions
116.3mm(L) × 60.5mm(W) × 11.9mm(T)
Weight
About 120g (including the battery)
Technical standard
WCDMA/HSDPA: 3GPP FDD Release 99, Release 5 (International
standard,3GPP R5)
GSM/GPRS/EDGE: 3GPP Release 99
Operating frequency
GSM/GPRS 900MHz
880MHz~915MHz/925MHz~960MHz(Uplink /Downlink)
GSM/GPRS 1800MHz
1710MHz~1785MHz/1805MHz~1880MHz (Uplink/Downlink)
GSM/GPRS 1900MHz
1850MHz~1910MHz/1930MHz~1990MHz(Uplink/Downlink)
WCDMA 900MHz
880MHz~915MHz/925MHz~960MHz(Uplink /Downlink)
WCDMA 2100MHz
1920MHz~1980MHz/2110MHz~2170MHz(Uplink /Downlink)
1.1 Product Appearance
1 Product Introduction
1.2 Product Specifications
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Items
Content Description
External interface
Standard Micro USB, MicroSD Card slot, 3.5mm headset
SIM card interface
standard 6-pin SIM card interface
USB
USB2.0 High Speed
Battery
1400 mAh Li-Battery;
Standby time: Up to 400 hours (3G)
Talking time: Up to 400 min (3G)
LCD
3.5-inch TFT-LCD flat capacitive touch-sensitive screen with 320×480
(HVGA) resolution, 262k colors
Antenna
Built-in antenna
Camera
3.2 MP FF
Sensors
Proximity/light sensor
Bluetooth
V2.1+EDR
WIFI
802.11b/802.11g/802.11n
GPS
AGPS
Power supply
100V~240V, 50/60Hz,1A
Temperature
Operating temperature: 0°C ~ + 45°C
Warehouse temperature: -40°C ~ +70°C
Relative humidity
working: 5% - 95%
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Electrostatic discharging is the major cause for the damage of sensitive electronic
components. Each service site should attach great importance to the electrostatic
discharging and strictly observe the antistatic measures described in this manual.
2 Maintenance Information Guide
2.1 Document Application
This document provides instructions for maintenance of Huawei products. This manual is Huawei
proprietary and is only permitted to be used by authorized service partners. Shall there be any mistakes
found in this document, kindly contact our customer service personnel.
2.2 Maintenance Precautions
Maintenance and calibration can be conducted only by qualified technical personnel.
Always wear an antistatic wrist strap during operation in an antistatic room.
Ensure that all the components, screws, and insulators are properly installed after maintenance or
calibration. Ensure that all the cables are properly connected.
Ensure that the soldering should comply with the environmental requirements and lead-free.
2.3 Obtaining Maintenance Information
For more related product knowledge and maintenance information, please visit Huawei website
http://www.huaweidevice.com/worldwide/technicaIndex.do
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No
Description
Quantity 1 Touch Screen
1 2 Front Cover Asm
1
3
Receiver
1
4
LCD Module
1
5
PCBA
1 6 boot-strap adagio
1 7 Camera Module
1
1 2 3 4 5 6 7 8 9
10
11
12
13
14
15
16
3 Explosive View of Product
This exploded view is only applied to show phone frame. It is not regarded as a reference for
applying spare parts.
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No
Description
Quantity
8
Volume_Key
1 9 Bottom Cover Asm
1
10
PRODUCT_LABEL
1
11
Li-ion Battery
1
12
Battery_Cover_Asm
1
13
MIC_COVER
1
14
Voice Key Adagio
1
15
Speaker
1
16
Main Antenna
1
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U1101 Headphone Audio
Power Amplifier
Failure symptom:
Earphone no voice
U4201 WLAN/Bluetooth
2.1/FM Single chip
Failure symptom:
WIFI&BT&FM failure
J1101 earphone connector
Failure symptom:
Earphone failure
J1402 SD Receptacle
Failure symptom:
SD card failure
U401 CPU, MSM7227
Failure symptom:
No power on;
Other function failure
Z4101 Ceramics Filter
Failure symptom:
WIFI&BT failure
U1204 Accelerometer
Failure symptom:
Accelerometer failure
J1001 Camera Socket
Failure symptom:
Camera failure
U601 FLASH
Failure symptom:
No power on;
Software failure.
U201 Power Management
IC, PM7540
Failure symptom:
No power on
X301 crystal-32.768KHz
Failure symptom:
No power on
U3801 WCMDA/GSM
Radio Transceiver
Failure symptom:
RF failure
U3201 RF Connector
Failure symptom:
RF failure
U1303 Voltage Regulator
Failure symptom:
LCD backlight failure
J1502 BTB Connector
Failure symptom:
Touch panel failure
J1301 BTB Connector
Failure symptom:
Display failure
U1401 Vibrator
Failure symptom:
Vibration failure
U1203 E-Compass
Failure symptom:
Compass failure
U3101 TCXO-19.2MHz
Failure symptom:
No power on; RF failure
U901 DCDC control chip
Failure symptom:
Charge failure
Z4304 SAW filter
Failure symptom:
Weak signalWCDMA2100&1900MHz
X4101 Crystal, 37.4MHz
Failure symptom:
WIFI&BT failure
U4104 RF switch
Failure symptom:
WIFI&BT failure
J1401 SIM Socket
Failure symptom:
SIM card failure
J1201 Battery Connector
Failure symptom:
No power on
U3702 SAW Filter
Failure symptom:
RF receiver failureWCDMA2100MHz
Z4001 SAW Filter
Failure symptom:
GPS failure
Z4002 SAW Filter
Failure symptom:
GPS failure
U4001 GPS LNA
Failure symptom:
GPS failure
4 Location of Components on the Main Board
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BOM
Description
Location
15040238
Transient Suppressing Diodes
D1201,D1501,D1502,D1505,
D1506,RV1501,RV1502,
RV1503,RV1504
15020160
Infrared Emitting Diode
D1202
15020111
Lighting Diode-0.05cd/0.1cd/0.18cd
D1301
D1202 Infrared Emitting
Diode
Failure symptom:
Light&Proximity sensor failure
U3502 SAW Filter
Failure symptom:
RF transmitter failureGSM900MHz
U3501 Power Module
Failure symptom:
RF transmitter failure-GSM
U1202 light&Proximity
sensor
Failure symptom:
Light&Proximity sensor failure
U3202 RF Switch
Failure symptom:
RF failure
J901 IO Connector
Failure symptom:
Charge failure
U3404 Duplexer
Failure symptom:
RF failure-WCDMA900MHz
U3304 Duplexer
Failure symptom:
RF failureWCDMA2100MHz
U3302 Power Module
Failure symptom:
RF transmitter failureWCDMA2100MHz
U3301 SAW Filter
Failure symptom:
RF transmitter failureWCDMA2100MHz
U3402 SAW Filter
Failure symptom:
RF transmitter failureWCDMA900MHz
U3401 Power Module
Failure symptom:
RF transmitter failureWCDMA900MHz
U4401 NFC Controller
Failure symptom:
NFC function failure
BOM List is only for your reference, the lasted BOM information is downloaded in the system of
Huawei.
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BOM
Description
Location
15010251
Schottky Diode
D1401,D1503
15020099
Lighting Diode-0.045cd-White
D1402,D1403
15040208
Transient Suppressing Diodes
D1404
19040121
Fast Blowout Fuse
F901
14240247
IO Connector
J901
14240170
Connector,Camera Socket
J1001
14240229
Headphone Connector
J1101
14240178
Battery Connector
J1201
14240129
BTB Connector-Female-50pin
J1301
14240194
Connector,SIM Socket
J1401
14240243
Card Connecter, MicroSD Receptacle
J1402
14240199
BTB Connector,Female,10Pin
J1502
51621023
Ground Spring
J1504,J1505
51621274
Main Antenna SMT Spring
J3201,J3202,J3203,J4001,
J4002,J4101,J4102,J4301,
J4302
22050053
MIC
MIC901,MIC902
15060228
MOSFET,P Channel
Q202
15060152
MOSFET-N Channel
Q4401,Q4402,Q4403
07040071
Varistor-90V-45V-1A-300V
RV901,RV902
07040075
Varistor-18V-14V-10A-40V
RV903
07040061
Varistor-12V-99999V-5A-25V
RV1201,RV1401,RV1402,
RV1403
51622500
SPEAKER_CU
S1501,S1502
51621920
SMT_Nut
S1503,S1504
51622462
30M CAMERA_SUPPORT
S1511
39200074
Power Management IC of QUALCOMM MSM7200
Series _PM7540
U201
39110548
LDO,3.3V
U202
39200245
WCDMA/GSMDualmode BASEBAND PROCESSOR
MSM7227-1
U401
36020341
CMOS-8-D Triggering Device
U502
40060223
FLASH
U601
39110531
DCDC Control Chip
U901
39080124
Headphone Audio Power Amplifier
U1101
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BOM
Description
Location
38140017
semiconducting sensor, light&Proximity sensor
U1202
38140024
Semiconductor Sensor, E-Compass
U1203
38140023
Semiconductor Sensor, Accelerometer
U1204
39110581
Voltage Regulator
U1303
32050026
Vibrator
U1401
12070013
Temperature Compensated Crystal
Oscillator-19.2MHz
U3101
14240004
RF Connector-Straight-Female
U3201
47140048
RF Switch,824~960MHz/1710~2170MHz
U3202
13010186
SAW Filter-1950MHz
U3301
47100280
Power Module,1920~1980MHz
U3302
13080065
Duplexer,TX:1920~1980MHz/RX:2110~2170MHz
U3304
47100277
Power Module,880~915MHz
U3401
13010189
SAW Filter-897.5MHz
U3402,U3502
13080078
Duplexer,RX:925~960MHz/880~915MHz
U3404
47100258
Power module
U3501
13010262
SAW filter,2140MHz
U3702
39200084
WCMDA/GSM Radio Transceiver(RTR6285)
U3801
47090042
GPS LNA
U4001
47140049
RF switch,0.5~3.0 GHz
U4104
39200222
Single Band 2.4GHz WLAN/Bluetooth 2.1/FM Single
chip-BCM4329
U4201
12020123
Crystal Units,32.768kHz
X301
12020168
Crystal,37.4MHz
X4101
07040064
Varistor-8V-4V-30V-SMT-0405-ESD+EMI Noise Filter
Z1101
13010180
SAW Filter-1575.42MHz
Z4001,Z4002
13030038
Ceramics Filter,2450MHz
Z4101
13010148
SAW Filter-2140MHz
Z4304
51633362
WIFI_CHIP
U4201
39200283
NFC Controller
U4401
03021DVE
boot-strap adagio
/
03021DVD
Voice Key Adagio
/
23040176
LCD Module
/
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BOM
Description
Location
22020058
Speaker-8ohm
/
23060043
Camera Module
/
22030037
Receiver,30ohm
/
23070079
Touch Screen
/
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Item
Contents
Remark
Upgrade Environment
Battery
The battery level shall be no less than two bars.
Micro SD card
512M at least.
PC
For copy upgrade file.
Upgrade packages
Main package
The version is only for your information. Please
download the latest version.
Vendor package
Please download the location version.
Upgrade mode
SD card upgrade
Normal download & Force Download.
5.1 Preparation for Upgrade
5 Software Upgrade
5.2 Upgrade Process
1. Format micro SD card or delete its content;
2. Create a folder and named as “dload” to the root directory of the MICRO SD card, copy the customize
package “updata.app” the dload folder;
3. Insert micro SD card，enter Dialer interface, input *#*#2846579#*#*, operate as follows:
ProjectMenu→7. Upgrade→1. SD card upgrade→Confirm
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4. Begin upgrade the main package, the handset will restart automatically.
5. Upgrade the vendor package, the upgrade procedure is the same as upgrade main package.
5.3 Force Download
1. Format micro SD card or delete its content.
2. Create a folder and named as “dload”, copy “updata.app” into it.
3. Make sure your handset is power off, Insert micro SD card into the handset.
4. Pressing Volume up Key and Volume down Key, and then press Power Key to enter force
download.
5. After upgrade complete, the handset will restart automatically.
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5.4 Check the Firmware Version
To check the version
Settings -> About device -> Build number
5.5 Error Handling
Error 1
During SD card upgrade, the key pad led flash very frequently (two flashes per second), and the
progress bar stop, that means an error occurs. Check whether there is a miss-operation. You can
change another phone or SD card to do the test.
Error 2
If you find below picture displayed in the screen of your phone, that means something wrong happened.
Check whether there is a miss-operation. You can change another phone or SD card to do the test.
Notes:
To make sure that the power of the battery is enough to run the upgrade process. Maybe you can
connect the handset with the charger or the USB data cable to provide power.
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Name: Constant-temperature Hot Air Gun
Purpose: Heat component.
Name: Soldering Iron
Purpose : Repair soldering
Name: DC Power Supply
Purpose: Supply voltage and current.
Name: Soldering Station
Purpose: Fix main board.
Name: Pb-free Solder Wire
Purpose: Join component.
Name: Digital Multimeter
Purpose: Service measure
Name: Oscilloscope
Purpose: Service measure
6 Maintenance Tools
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